Loose Cannon

Requirement for full syncronization: Open one of the first three gates.

Getting detected in this mission means instant failure...so don't. Start by jumping into the water and swimming toward the marker on your mini-map. If an enemy starts to spot you, press and hold the dive button to go under water until the enemy turns away. When you reach the target, talk to the man and then follow him on his gondola. But don't touch his gondola. Any interaction with the gondola will fail the mission.

Eduardo will paddle his gondola into a tunnel that takes him by myriad guards. He gets a free pass through the gates, but you'll have to find more creative ways to progress. Start by killing the guard on the nearest landing and then climbing to the rafters overhead. You can use the rafters to pass over the gate that closes and continue following Eduardo's gondola.

Or you can go ahead of Eduardo. The path doesn't branch so you can't get lost. To get full synchronization, the game wants you to manually open one of the first three gates Eduardo encounters. Get ahead of Eduardo, assassinate the guards that would open the gate, and then open the gate by yourself. Stick to the rafters as much as possible, but know that you aren't completely undetectable. You'll need to perform some assassinations to get through the tunnels unseen, but you'll always want to go back to the rafters immediately.

Eventually, Eduardo goes through a gate you can't and you need to find a nearby platform with a wheel crank switch. Hit the switch to open a door, go through the door and climb a ladder just inside the doorway to the right. Continue to use rafters and assassinations to progress.

After finding a second wheel crank, you'll enter a tunnel outside a dry dock. It's okay to be spotted now so go out and fight everything to death. A ladder next to the tunnel exit will get you to an upper level with the blueprints you need to destroy. Burn 'em.

Another wheel crank switch in the northeast corner of the dry dock reveals a platforming path to the highest levels in the area. Watch for a few more guards and follow the waypoints to a final switch.

Now you're on a boat with a rad cannon that you need to use in order to take down a series of Borgia ships. The ships fire back, though, so evasive maneuvering is required. We suggest coming up alongside the enemy ship with momentum. Switch to cannon controls and quickly take out the ship's three sails (you can ignore the enemies shooting at you). When all ships are destroyed, the mission ends.